Which of the following is a major difference between viruses and living things?

A.
Most living things can reproduce independently, whereas viruses must infect living cells in order to reproduce.
B.
Viruses can cause diseases in humans, whereas no type of living organism can cause an infection or disease.
C.
Viruses must eat in order to obtain energy, whereas all types of living things can make their own food.
D.
Living things contain genetic information in the form of nucleic acids, whereas viruses do not contain any genetic material.

A. Most living things can reproduce independently, whereas viruses must infect living cells in order to reproduce.